Assessment of thermochemical data of ternary Na-Fe oxides and calculation of the Na-Fe-O phase diagram
Creators
- 1. Japan Nuclear Cycle Development Inst., Oarai, Ibaraki (Japan). Oarai Engineering Center
Description
In Na-Fe-O system, some ternary sodium-iron complex oxides have not been intensively investigated, so their thermodynamic data obtained separately seem not consistent to each other. Available thermodynamic databases sometimes lead to wrong conclusions. The Gibbs energies of formation of Na3FeO3 and Na4FeO3 were both evaluated based on the latest experiment results. Consistent sets of thermodynamic data tables were created for Thermo-Calc and MALT2 computer codes. The modified thermodynamic database was applied to carry out ternary phase diagram calculations by Thermo-Calc code at different temperatures. Meanwhile, predominance diagram of Na-Fe-O at high temperatures were calculated too. The chemical stability of sodium iron complex oxides was quantitatively determined according to present calculation. Compared to some early phase diagrams in the Na-Fe-O system, the new phase diagrams show better consistence with the experiment results obtained up to now. The fundamental information given in this study is of important significance for further studies related to Na-Fe-O system. (author)
Availability note (English)
Available from JICST Library (JICST: Japan Science and Technology Corporation, Information Center for Science and Technology), P.O. Box 10 Hikarigaoka, Tokyo 179-9810 Japan, FAX: +81-3-3979-4781, JICST Service Homepage: www.jst.go.jp/EN/Additional details
Publishing Information
- Imprint Pagination
- 59 p.
- Report number
- JNC-TN--9400-2002-006
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 33071183
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- BINARY MIXTURES; COMPUTER CALCULATIONS; IRON OXIDES; PHASE DIAGRAMS; SODIUM OXIDES; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0400-1000 K; THERMOCHEMICAL DIAGRAMS; THERMODYNAMIC PROPERTIES
- Descriptors DEC
- ALKALI METAL COMPOUNDS; CHALCOGENIDES; DIAGRAMS; DISPERSIONS; INFORMATION; IRON COMPOUNDS; MIXTURES; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SODIUM COMPOUNDS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- 16 refs., 15 figs., 9 tabs.